Citation Checker

Instructions

Verify the existence, accuracy, and current authority of every legal citation in a document. Citation checking is a critical quality control function in legal practice — an incorrect citation undermines credibility with the court, and a citation to overruled authority can be malpractice. In the Patriot University platform context, citation accuracy is essential to maintaining the trust and utility of the knowledge base.

The Citation Checking Process

Step-by-Step Protocol

Step	Action	Purpose
1	Verify existence	Confirm the cited authority actually exists — the case was decided, the statute was enacted, the regulation was promulgated
2	Verify citation format	Check that the citation conforms to Bluebook format (or applicable court rules)
3	Verify pinpoint citations	Confirm that the specific page, section, or paragraph cited actually contains the proposition attributed to it
4	Verify quotation accuracy	Compare every quotation word-for-word against the original source. Check for omissions (ellipses), alterations (brackets), and emphasis
5	Check current authority	Run every case through a citator (KeyCite, Shepard’s, BCITE) to confirm it has not been overruled, reversed, or significantly questioned
6	Check statutory currency	Verify that cited statutes have not been amended, repealed, or renumbered
7	Check regulatory currency	Verify that cited regulations have not been amended or revoked
8	Flag problems	Mark any citation that cannot be verified, has negative treatment, or does not support the proposition for which it is cited

Citator Signal Interpretation

KeyCite (Westlaw)

Flag	Meaning	Action Required
Red flag	Case is no longer good law for at least one point of law	STOP — investigate immediately. May not be cited as authority for the overruled point
Yellow flag	Case has some negative treatment but has not been overruled	Investigate — determine if the negative treatment affects the proposition for which the case is cited
Blue-striped H	Case has some history (appeal, remand, etc.)	Review the history to ensure the cited proposition was not affected
Green C	Case has citing references but no direct negative treatment	Generally safe, but review citing references for relevant discussion

Shepard’s (Lexis+)

Signal	Meaning	Action Required
Red stop sign	Negative treatment — overruled, reversed, or superseded	STOP — investigate immediately
Orange Q	Questioned by citing authority	Investigate — determine if the questioning affects the cited proposition
Yellow triangle	Caution — possible negative treatment	Investigate the nature of the treatment
Green diamond	Positive treatment — followed, affirmed	Generally safe
Blue circle	Citing references available, treatment neutral	Review if needed

Common Citation Errors

Error Type	Example	How to Catch
Ghost citations	Case does not exist (fabricated by AI or human error)	Search the case name and citation in Westlaw/Lexis. If it does not appear, it does not exist
Wrong reporter	Case exists but the volume/page citation is wrong	Verify by case name search, then confirm the specific reporter citation
Wrong year	Year in parenthetical is incorrect	Verify against the actual opinion
Wrong court	Court identification in parenthetical is wrong	Verify against the actual opinion
Stale authority	Case has been overruled or superseded	Run through citator
Wrong pinpoint	The cited page does not contain the proposition attributed	Read the actual page cited
Misquotation	Quoted text does not match the original	Word-for-word comparison against the original
Missing alterations	Brackets or ellipses not shown when text was altered	Compare against original
Over-citation	Citation does not actually support the proposition stated	Read the cited passage in context
Under-citation	Proposition stated without any supporting citation	Flag for the author to add authority

Bluebook Citation Format — Quick Reference

Cases

Standard format: Party v. Party, Volume Reporter Page (Court Year).

Element	Example
Full citation	Brown v. Board of Education, 347 U.S. 483 (1954)
With pinpoint	Brown v. Board of Education, 347 U.S. 483, 495 (1954)
Short form (id.)	Id. at 495
Short form (supra)	Brown, 347 U.S. at 495
Parenthetical	Brown v. Board of Education, 347 U.S. 483, 495 (1954) (holding that racial segregation in public schools violates the Equal Protection Clause)

Reporter Abbreviations (Federal)

Reporter	Abbreviation	Court
United States Reports	U.S.	Supreme Court
Supreme Court Reporter	S. Ct.	Supreme Court
Federal Reporter (3d series)	F.3d / F.4th	Courts of Appeals
Federal Supplement (3d series)	F. Supp. 3d	District Courts
Federal Rules Decisions	F.R.D.	Discovery/procedural opinions

Statutes

Type	Format	Example
U.S. Code	Title U.S.C. § Section	42 U.S.C. § 1983
Public Law	Pub. L. No. XX-XXX, § Section, Volume Stat. Page (Year)	Pub. L. No. 117-58, § 11101, 135 Stat. 429 (2021)
State statute	State Code Ann. § Section (Year)	Cal. Penal Code § 187 (West 2023)

Regulations

Type	Format	Example
Code of Federal Regulations	Title C.F.R. § Section (Year)	8 C.F.R. § 1003.1 (2025)
Federal Register	Volume Fed. Reg. Page (Date)	90 Fed. Reg. 12,345 (Mar. 1, 2025)

Constitutional Provisions

Type	Format	Example
Amendment	U.S. Const. amend. XX	U.S. Const. amend. XIV, § 1
Article	U.S. Const. art. X, § X, cl. X	U.S. Const. art. I, § 8, cl. 1

Signals

Signal	Meaning
[no signal]	Cited authority directly states the proposition
See	Cited authority clearly supports the proposition but does not directly state it
See also	Additional authority supporting the proposition
Cf.	Cited authority supports the proposition by analogy
But see	Cited authority directly contradicts the proposition
But cf.	Cited authority contradicts the proposition by analogy
See generally	Cited authority provides helpful background
Contra	Cited authority directly states the contrary of the proposition

AI-Generated Citation Risks

The Hallucination Problem

Large language models (LLMs) are known to fabricate legal citations — generating case names, reporters, and page numbers that look plausible but refer to nonexistent opinions. This is not a theoretical risk; it has resulted in sanctions against attorneys who filed AI-generated briefs with fabricated citations.

Notable incidents:

• Mata v. Avianca, Inc., No. 22-cv-1461 (S.D.N.Y. 2023) — Attorney sanctioned for filing brief containing six fabricated case citations generated by ChatGPT
• Multiple subsequent incidents across federal and state courts

Verification Protocol for AI-Assisted Content

Every citation in any AI-generated or AI-assisted content must be verified through the full citation checking protocol:

1. Never trust an AI-generated citation without independent verification. Search the exact case name and citation in a legal database
2. Verify the holding matches. Even if the case exists, the AI may misstate what it held
3. Verify quotations. AI frequently generates plausible-sounding but inaccurate quotations
4. Run through a citator. Confirm the case remains good law
5. Check pinpoint citations. AI frequently generates incorrect page numbers

Red Flags for Fabricated Citations

Red Flag	What to Check
Case name is unusually generic	Search for the exact case name in Westlaw/Lexis
Reporter volume or page seems wrong for the year	Check the reporter’s volume/page ranges for the claimed year
Court and year seem mismatched	Verify the court existed and published in that reporter during that year
Holding is stated too perfectly for the proposition	Read the actual case — the holding may be different
Multiple citations in a row all look similarly formatted	AI tends to generate batches of citations with similar patterns
Case cannot be found by name or citation	The case likely does not exist

Platform Content Verification

For Patriot University Knowledge Base

All legal citations in the Patriot University knowledge base and skills should be verified to the following standard:

1. Case citations: Verify existence, correct citation format, current authority status, and accuracy of attributed holdings
2. Statutory citations: Verify current codification, check for amendments, confirm section numbering
3. Regulatory citations: Verify current CFR citation, check for amendments or revocations
4. Constitutional citations: Verify correct article/amendment/section/clause format
5. Date-sensitive claims: Flag any claim tied to a specific date or status (e.g., “as of 2025”) for periodic review

Quality Tiers

Tier	Standard	Applies To
Tier 1 — Court-ready	Full Bluebook compliance, citator-verified, pinpoint-checked, quotation-verified	Appellate briefs, motions, court filings
Tier 2 — Research-grade	Existence verified, current authority confirmed, holdings accurately stated	Research memoranda, knowledge base skills
Tier 3 — Educational	Existence verified, holdings accurately stated, may use simplified citation format	Know-your-rights materials, community education

Recognized Citation and Legal Writing Authorities

Authority	Contribution
The Bluebook: A Uniform System of Citation (21st ed.)	The standard citation manual for U.S. legal writing (published by Harvard, Columbia, Penn, Yale law reviews)
ALWD Guide to Legal Citation (7th ed.)	Alternative citation manual, more user-friendly, gaining adoption
Bryan Garner (LawProse, Inc.)	The leading authority on legal writing style; editor of Black’s Law Dictionary
Richard Wydick (posthumous)	Author of Plain English for Lawyers — foundational legal writing text
Ross Guberman (Legal Writing Pro)	Author of Point Made and Point Taken; legal writing consultant

Analysis Protocol

When checking citations:

1. Read every citation. Do not skip any — even “obvious” citations can be wrong
2. Verify existence first. If the authority does not exist, no further checking is needed — flag and remove
3. Check authority status. Run cases through a citator. Check statutes and regulations for currency
4. Verify accuracy. Does the authority say what the document claims it says? Read the actual source
5. Check format. Does the citation comply with Bluebook (or applicable rules)?
6. Flag all issues. Use a consistent flagging system: RED (authority does not exist or is overruled), YELLOW (negative treatment or possible inaccuracy), GREEN (verified and current)
7. Report findings. Produce a citation verification report listing each citation, its status, and any issues identified

Important caveat: Citation checking is a verification function — it confirms what exists and what is accurate. It does not create legal arguments or make legal judgments. When a citation error is found, the appropriate response is to flag it for correction by the attorney or content author, not to substitute a different authority. Never fabricate or assume the existence of a case, statute, or regulation to fill a citation gap.